Corner-staying, metal-edging, and like machine



i. W. NASMITH.

CORNER STAYING,METAL EDGING,AND LIKE MACHINE.

'APPLICATION FILED APR. 9, 1921.

LMQfiQ-QL Patented. June 13,1922. I

2 SHEETSSHEET h A TTORNEVS:

J. W. NASMITH.

CORNER STAY! NG,METAL EDGING,AND LIKE MACHINE.

APPLICATION FILED APR. 9, 1921.

1 A 1 9, 34A) at te u e 13, 1922.

2 SHEETS-SHEET 2.

A TTUR/VE Y5.

c r e ii A 11 this Elan 0 CORNER-STAYING, METAL-EIJGING, AND LIKE MACHINE.

Application filed April 9,

1/ 0 all 207mm it may concern:

Be it known that 1, JOHN VVILLIAB'I Nns turn, a subject of the King of Great Britain, residing at Leegate, Mauldeth, Heaton Mersoy, hflanchester, England, have invented new and useful Improvements in Cornen Stayin hflejtal-Edsz'in and like Machines. "7 1 I of which the following is a specification.

The invention has for its object the improvement, by the application of protective appliances, of corner staying, metal edging, stitching or like machines as employed in the box making and similar industries. In such machines material is fed forward, cut off and pressed on to the object to be operated on by a ram or presser and many accidents happen by the ram crushing the fingers of the operator. In order that the invention may be understood I append two sheets of drawings and for the purpose of illustration a corner staying machine is shown but it will be understood that it is similarly applicable to a metal edging machine or other similar machine.

Fig. 1 is a side elevation of a corner staying machine.

Fig. 2 a front elevation of the same.

Figure 3 is a vertical section on line z2 of Figure 1, on a larger scale.

Figs. 1 and 5 show an alternative arrangement and Fig. 6 a detail when such an arrangement is employed.

To make the use of the invention clear the general arrangement of a corner staying or hitting machine will be first described.

The driving shaft S is turned from the pulley P through a one revolution clutch C, controlled by a pin actuated by a treadle. On the end of the shaft S is the crank K driving the ram B through a spring device and which carries the cutting off knife I shearing against the fixed knife E, as is usual in such machines. The cam M rotates with the shaft S and under the influence of the lever L can also slide on the shaft on the feather key Y. The lever L is pivoted at 1 and connected by a link 2 to the bracket 3 screwed to the anvil A, which is shown advanced to its full extent so that the whole of the effective face of the cam M acts on the roller on the feed lever FL, pivoted at 4 and connected by link 5, to the feed gripper 6 pivoting on the pin 7 in the feed block B. The lever FL is constantly pulled towards Specification of Letters Patent.

Patented June 13, 1922.

1921. Serial No. 460,143.

the stop T by a spring acting in the direction of the arrow N. The anvil A may be moved to any other position and clamped there by the clamp V (Fig. lVhen the anvil A is moved farther to the right the cam M is moved to the left through the lever L and a shorter portion of the cam face M acts on roller and on the lever FL. so that the feed is correspondingly shortened. The feed block B is at liberty to slide freely on the rods 0 0 under the influence of the lever FL, the rods being fixed in the head H, forming a part of the frame of the machine. hen :the lower end of the lever FL is moved to the left by the action of the cam M. the feed gripper 6 rocks on its pivot 7 and its under arm, shown dotted in Fig. 1, grips the material at 8 against the suitably formed under face of the block B. The material U (gummed paper, serrated metal edging or other material the case may be) is fed through the feed block B to the knife E in the usual way from the back of the ma chine. hilst the feed is being made the ram is descending and when the full length has been fed, the :knives cut off the material and the ram presses it on to the object on the anvil to which it is to be applied. It frequently happens that in handling the object rapidly, the operators lingers inadvertently get under the ram and are frequently crushed. The object of the inven tion is to prevent this in machines of this character of which the foregoing is a gen eral description, and to do it without stopping the machine.

In carrying the invention to effect bars 9, one on either side, are fixed to the feed block B (Figs. 1 and 2). These have hinged to them blades 10 held in position by springs 11. The outer ends of the blades 10 are bent round the front of the knife E to form finger 10 as shown by Fig. 2. The end of the material (in the case illustrated a gummed strip of stay paper U wetted by the roller D and represented by the heavy line 12) rests on the ends of the fingers 10. The block B moves forward to effect the feed carrying with it the blades and their fingers 10, 10 and the latter passing along near the top on either side of the anvil A as the ram is descending, positively push away before them any obstruction that may be on the anvil, perchance the fingers of the operator, without throwing out the clutch and stopping the machine. In addition to this the fingers 10 support the outer end of the material 12 and keep it central over the end of the box until cut off and pressed on by the ram R.

In Figs. 4, and 6 an alternative method is shown. Rods Q Q replace the bars 9 and the blades 10 and these rods partake of the to and fro sliding motion of the feed block B and slide also in bearings formed in either end of the head H. They are also at liberty to turn slightly in. the block B and in their bearings in the head l-l. On the outer ends of the rods Q are pinned the fingers F F having the same functions as the blade fingers 10. They support the material at the forward end and travel along to top of the anvil A as the feed takes place, to remove any obstruction. They are maintained in the position shown in Fig. l by suitable springs and when the ram R descends the fingers F are pushed downwards by the ram to the position shown in Fig, 5 whilst the ram is pressing the material on to the corner of the box X.

Fig. 6 shows a suitable :lt'eed block and springs to keep the fingers F F in their normal position when this arrangement is used. The block B has cast on it ears l3 drilled to receive the rods Q Q and fixed or cast on the ears or stops 14L. Collars 15 are pinned on the rods Q so that the rods move with the block B when it moves to make the feed, the rods sliding in their bearings in the head H. The collars are formed each with a projection on the rim, one end of which contacts with the stop 14 and the other receives the end of a suitable spiral or other spring 16 tending to keep the projection against the stop 14 but permitting the ram to push the fingers out of the way when it descends on them.

hat I claim is:

1. A machine of the character stated, comprising an anvil, a ram movable toward and from the anvil, means for intermittently feeding a strip of material between the ram and the anvil, and pushing mechanism for positively removing an obstruction from that portion of the anvil which is in line with the path of the ram, said pushing mechanism being connected with the feeding means to move therewith, the acting terminal portions of the pushing mechanism beingmounted to yield in the direction of movement of the ram.

2. A. machine of the character stated, comprising an anvil, strip-cutting means, a ram movable crosswise of the anvil, stripfeeding means movable lengthwise ot' the anvil, protective lingers, and connections between said lingers and the said feeding means, whereby the fingers are moved with the feeding means to remove an obstruction from that portion oi the anvil which is in line with the path of the ram, said fingers being yieldingly supported and adapted to yield to the pressure of the ram upon them when said ram descends.

3. A machine of the character stated substantially as specified by claim 2, said fingers being normally held in position to support and guide the outer portion of a strip while the latter is being fed, so that a section cut from said strip is in correct position in relation to the object to which it is to be attached.

In testimony whereof I have affixed my signature.

JOHN WILLIAM NASMITH. 

